Sealing machine



Dec. 10, 1929. wfg, SILVER f' 1,739,048

SEALING MACHINE Filed Feb. 3. 1928 3 Sheets-Sheet l :FTFL Y INVENTOR.

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Dec. 1o, 1929. w s $.LVR 1,739,048

SEALING MACHINE Filed Feb. 5. 1928 3 Sheets-Sheet 2 INVENTOR. #AM,L1/uw.

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Dec. 10, 1929. W, s, SILVER 1,739,048

SEALING MACHINE 'Filed Feb. 3. 1928 5 Sheets-Sheet 5 Patented Dec. 10,1929 UNITED STATES WILLIAM SCOTT SILVER, 0F HAVRE DE GRACE,IVIARYLANDSEALING IVIACLFIIBTIEX` Application filed February 3, 1928. Serial No.251,643.

This invention relates to certain new and useful improvements in sealingmachines and has for its particular object the provision ot' a sealingmachine tor corrugated paper or fiber boxes.

The principal object ot' the invention is the provision ot a machinehaving a rotatable table carrying box holding supports, on which theflexible containers, such as boxes or the like, are placed so that oneoi their ends may be securely sealed with suitable adhesive or sealingtape.

A further object of the invention is the provision of a machine having arotatable table carrying boxes on supporting members, so that when thecontainers are placed thereon they may be positioned accurately underthe sealing plate so that the given ends of the boxes or containers maybe securely sealed.

A still further object ot' the invention is the provision of a sealingmachine equipped with hinged arms Icarrying sealing plates and apressure means whereby said plates may be locked into active containerengaging position so that a given end of the container may be securelyand permanently sealed.

A still further object ot the invention is the provision of a sealingmachine equipped with means whereby the pressure on the end ot thecontainer being sealed may be regulated in accordance with the requiredamount of pressure needed.

A still further object of the invention is the provision of a sealingmachine equipped with a rotatable table carrying container supports, `aplurality of laterally projecting hinged arms carrying sealing plates,and an adjustable pressure locking means whereby said sealing plates maybe locked in active engagement with the end of the container to besealed, so as to assure of a positive sealing action.

lVith these and other objects in View, the invention consists in certainnovel features. combination and arrangement of parts as will behereinafter more fully described, illustrated in the accompanyingdrawings, and claimed.

In the drawings,

Figure 1 is a side elevational View of my improved sealing machine, asmade in accordance with this invention;

Figure 2 is a transverse sectional view tal-:en on the line 2 2 ofFigure 1;

Figure 3 is a longitudinal sectional view 55 taken on the line 3 3 ofFigure 1;

Figure l is a fragmentary detailed perspective view, illustrating themachine in inactive position; and,

Figure is a fragmentary enlarged deeo tailed perspective view,illustrating the initial sealing movement oi' my improved machine.

Referring to the drawings, the numeral 5 "indicates a base preferably ofcircular tormation, and extending upwardly from the center oi said baseis a bearing 6, in which is rotatably mounted a vertical standard 7. andsecured to the standard 7 intermediate its ends,

is an annular table 8 provided on its underside 70 with relativelyspaced depending legs 9, having mounted in their lower terminals,rollers 10, which have contact with the upper surface of the base 5.

The table 8 is rigidly supported to theV 75 standard 7 by suitable bracerods 11, and it can be readily understood that the even travel of thetable is accomplished by virtue et the `rollers 10 and their associationwith the table 8. so Mounted on the upper side of the table 8 is aplurality of relatively spaced box supports 1 connected together bysuitable brace rods 1G, 90

and to the outer ends ot these arms 15 are hinged, as at 17, pressurearms 18, and tothe underside of these arms 18 are pivotally secured, asat 19, pressure plates 20. The pressure plates 20, which are pivotallyse cured, as at 19, to the arms 18, are so pivoted as to permit them tohave contact with the entire area of the end 1d ot the container 13,

so that when pressure is applied to said plates through the medium ofthe arms 18, the entire permanently and securely Y. arms 18 may be heldin pressure Contact with the container 13, I pivotally secure, as at 21,tothe upper end of the standard 7, a plurality or" barrels 22, in whichis adjustably secured one end of the pressure looking lever 23, whichhas its inner end surrounded by a coil spring 24', so that the tensionon said pressure lever may beregulated; f Pivoted as at 25, to t-hepressure lever 23, is a link structure 26, the free ends of said linkstructure being pivoted, as at 27, to the pressure arms 18. a

The free end of the pressure lever 23 has anv angular extension a 28,-constituting a handle, whereby said lever may be manipulated to Veitherraise the pressure arms 18,

.as illustrated in Figure 1a-.or hold saine in positive contact with thebox supports 12, as illustrated in Figure 1. Y

Y. l/Vhen the pressure lever 23 is closed in the position illustrated inFigure 1, the majority of said lever is forced beyond the center of thepivot 25, so as to setup a locking action to retain the pressure arm andits plate in positive sealing Contact with the end of the con-v tainerbeing sealed.

It can -be readilyV understood that when the device is in operation theoperator places the L containers on the supports 12, vfolds the ends iinwardly afterV first applying a suitable adhesive thereto, bringsthearm 18 carrying,

the plate 20 into Contact with said lends of the containers, pressingthe lever 23 into locked position, which automatically exerts pressure lthrough the link structure 26vr to the arm 18 jposition.

.through the vplate 20 to thecontainer end', so as to permanently sealthe latter Vin closed Y Having thus described my invention, what Y Y Iclaim as new is:

A box .sealing machine comprising a y stationary base, a standardrotatably mounted at the centralaXisof said base, a table seeuredktosaid standard and equipped with` rollers' and Ahaving,Contact k.withsaidbaseV whereby even travel of the standard and, 4tablefmay be had-relative to thebase, oon-y tainer supportingv members securedto saidtable, stationary radially extending arms se- 4cured: tothestandardvabove saidvcontainer l supports, pressure arms hingeablysecured to the outer terminals'of saidV irst named garnis andY overlyingvsaid container supports, presf sure plates carried by said pressurearms, and

an adjustable locking means associated with said standard andcomprisingpivoted links whereby said pressure plates and armsmay Ysupports. Y Y y p Intestnnony whereof he hereunto aiiixes his signature.

be held in iirm contact'with said container WrLLiAM .SCOTT sirven.y

